JPH0452337B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention can minimize the space under the ceiling regardless of the height of the beam without reducing strength, and prevents the back of the beam from hitting the sloped surface of the roof near the girder. The present invention relates to a roof frame structure constructed using land beams made of lattice beams that can be constructed as follows.

When fixing a land beam to a general house, it is necessary to prevent the top chord from hitting the sloped surface of the roof near the girder. Roughly the following two modes are adopted. That is, one method is to fix the land beam as a whole below the wall top surface by directing the back of the land beam toward the roof frame and approximately matching the wall top surface without performing any processing on the land beam. The other method is to cut and remove the upper end of the land beam that corresponds to the roof slope surface, etc. to match the roof slope surface, so that the back of the land beam is directed toward the roof frame and from the top of the wall. is also positioned upward to fix the land beam as a whole upward.

However, in the case of the former fixing method, the ceiling gap from the ceiling board placed below the land beam to the top of the wall becomes larger, and the space under the ceiling becomes larger, which causes the problem of sacrificing indoor space. be. On the other hand, in the case of the latter fixing mode, although the problems of the former do not occur, there is a problem that cutting and removing the upper end of the land beam causes a decrease in shearing force at the end of the land beam.

Furthermore, when the land beam is made to have a large span, the wooden land beam needs to be made of laminated wood or the like, which makes it very expensive, which poses an economical problem.

Furthermore, although lattice beams have rarely been used as land beams in general houses, even if ordinary lattice beams were used as land beams, the space under the ceiling would become large and the interior space would be sacrificed. This may cause problems.

The present invention was made in view of the above points, and it is possible to minimize the space under the ceiling regardless of the height of the beam without reducing the strength, and to attach the beam to the sloped surface of the roof near the girder. To provide a roof frame structure using land beams made of lattice beams, which can prevent the back from touching and can economically cope with large spans.

That is, in the roof frame structure of the present invention, the upper chord member 1 is made shorter than the lower chord member 2, and the end of the upper chord member 1 and the end of the lower chord member 2 are integrally connected via the diagonal member 4. The lattice beam formed by the above is fixed as a land beam A with the diagonal members 4 corresponding to the roof slope, and at that time, the top chord member 1 is positioned above the upper surface of the side wall 6, and both ends of the lattice beam are fixed. It is characterized in that it is fixed to the inner surface of the wall 6, a binding material 9 is fixed to the upper surface of the upper chord member 1, a bundle 10 is fixed on the binding material 9, and a roof panel 7 is fixed to the top of the binding material 9. It is something.

Hereinafter, an embodiment of the roof frame structure of the present invention shown in the drawings will be described.

First, to explain the land beam used in the present invention, in FIG. 1, 1 is an upper chord member made of a steel profile, 2 is a lower chord member made of a steel profile, and the upper chord member 1 and the lower chord member 2 are as follows: Like conventional lattice beams, they are integrally fixed via web material 3.

In the land beam A according to the present invention, the upper chord member 1 is formed shorter than the lower chord member 2, and the end of the upper chord member 1 and the end of the lower chord member 2 are connected to the upward diagonal member 4.
They are integrally connected via.

In the case of the embodiment, the upper chord member 1 and the diagonal member 4 are formed from a single steel section, and by bending the constant length portions on both sides of the section obliquely downward, is used as the diagonal member 4. The diagonal member 4 and the lower chord member 2 are fixed together by welding. Further, the diagonal member 4 may be independent, and its both ends may be integrally fixed to the upper chord member 1 and the lower chord member 2, respectively.

Further, the inclination angle of the diagonal member 4 is formed to substantially correspond to the roof slope of the location where the land beam A is fixed in the present invention.

In addition, in FIG. 1, reference numeral 5 denotes fixing parts provided at both ends of the land beam A in order to fix the land beam A in the present invention.

Next, an embodiment of the roof frame structure of the present invention using the above-mentioned land beam A will be described with reference to FIGS. 2 and 3. Similarly, as shown in FIG. 2, it is fixed to the inner surface of the girder side wall 6 via the beam support 5, and the lower chord member 2 is positioned at the height of the top of the wall 6 as shown in FIG. In addition, the diagonal member 4 can be fixed close to the roof 7 near the girder. At that time, as shown in FIGS. 2 and 3, the upper chord member 1
are positioned above the upper surface of the side wall 6 to fix both ends of the lattice beam to the inner surface of the side wall 6, and at the same time, a binding material 9 is fixed to the upper surface of the upper chord member 1, and a bundle is placed on the binding material 9. 10 is fixed, and the roof panel 7 is fixed on top of it. By fixing the land beams A in this way and configuring the roof frame structure, the distance from the top surface of the wall 6 to the ceiling board 8, that is, the ceiling area, can be reduced, as shown in FIG. 3, and the indoor space can be reduced. losses can be kept to a minimum. Moreover, at this time, since the land beam A of the present invention has the diagonal members 4 as described above, there is no shortage of shearing force at the ends, and sufficient strength can be maintained as a land beam.

The upper chord member 1 of the land beam A according to the present invention fixed as described above usually has a
A wooden binding material 9 is appropriately fixed, a conventional roof frame is formed on this binding material 9, and a roof (roof panel) 7 is fixed.

In Fig. 2, 11 is the slope girder, 12 is the main building, 13 is the ridge beam, 14 is the joint girder, 15 is the corner beam, 1
6 is a flint beam.

As described above, the roof frame structure of the present invention is formed by making the upper chord member shorter than the lower chord member and integrally connecting the end of the upper chord member and the end of the lower chord member via diagonal members. The lattice beam is fixed as a land beam with the diagonal member corresponding to the roof slope, and at that time, the upper chord member is positioned above the top surface of the side wall, and both ends of the lattice beam are fixed to the inner surface of the side wall. At the same time, a binding material is fixed to the upper surface of the upper chord member, a bundle is fixed on the binding material, and a roof panel is fixed to the top of the binding material, and a truss structure including a land beam using a lattice beam and a structure such as a bundle etc. By combining the lattice beams, the strength of the roof frame can be improved while avoiding sacrificing interior space, and by fixing both ends of the lattice beams to the inner surface of the side walls, the space between the roof panel and the wall can be improved. This prevents large gaps from forming between the two. To further explain the effects of the present invention, according to the present invention, the diagonal member can be fixed close to the roof slope surface near the corresponding girder without the upper chord member touching the roof slope surface or the rafter. Therefore, the space under the ceiling can be kept to a minimum regardless of the height of the beam, and the diagonal members can maintain sufficient strength as a lattice beam.Furthermore, unlike conventional land beams, it is economical. Can accommodate large spans,
Furthermore, since the backs of the beams can be fixed upward, the volume of the shed material, especially the bundles, can be reduced, and since the beams are lattice beams, unlike wooden beams, the height of the beams is irrelevant. This has great effects, such as making it possible to standardize the shape and dimensions of beam supports.

[Brief explanation of the drawing]

FIG. 1 is a front view of an example of a land beam used in the present invention;
FIG. 2 is a perspective view showing one embodiment of the present invention, and FIG. 3 is a front view of the main part of FIG. A...Land beam, 1...Top chord, 2...Lower chord, 4
... diagonal material, 6 ... wall, 7 ... roof panel, 9 ...
Binding material, 10...bundle.

Claims (1)

[Claims] 1. A lattice beam is formed by making the upper chord member shorter than the lower chord member and integrally connecting the end of the upper chord member and the end of the lower chord member via a diagonal member, and attaching the diagonal member to the roof slope. The lattice beam is fixed as a land beam in a corresponding manner, and at this time, the upper chord member is positioned above the upper surface of the side wall, and both ends of the lattice beam are fixed to the inner surface of the side wall, and a binding material is applied to the upper surface of the upper chord member. What is claimed is: 1. A roof frame structure, characterized in that a bundle is fixed on the binding material, and a roof panel is fixed on top of the bundle.